45252100 - Sewage-treatment plant construction work

CPV code 45252100 in the EU Common Procurement Vocabulary refers to Sewage-treatment plant construction work. It sits at level 5 of the CPV hierarchy as a subcategory within the 45 division. This code is nested directly under 45252000, narrowing the broader category into the specific area of sewage-treatment plant construction work. It is further divided into 12 direct sub-codes such as 45252110, 45252120, 45252121, each refining the scope of sewage-treatment plant construction work into more specific goods, services or works. Contracting authorities across the EU use 45252100 in TED notices and national procurement portals to signal that a tender relates to sewage-treatment plant construction work.